EP2234221A1 - Connecteur - Google Patents

Connecteur Download PDF

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Publication number
EP2234221A1
EP2234221A1 EP10250543A EP10250543A EP2234221A1 EP 2234221 A1 EP2234221 A1 EP 2234221A1 EP 10250543 A EP10250543 A EP 10250543A EP 10250543 A EP10250543 A EP 10250543A EP 2234221 A1 EP2234221 A1 EP 2234221A1
Authority
EP
European Patent Office
Prior art keywords
contact
signal
signal contacts
contacts
connection portion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP10250543A
Other languages
German (de)
English (en)
Other versions
EP2234221B1 (fr
Inventor
Hayato Kondo
Yutaka Masumoto
Toshiharu Miyoshi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hosiden Corp
Original Assignee
Hosiden Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hosiden Corp filed Critical Hosiden Corp
Publication of EP2234221A1 publication Critical patent/EP2234221A1/fr
Application granted granted Critical
Publication of EP2234221B1 publication Critical patent/EP2234221B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/71—Coupling devices for rigid printing circuits or like structures
    • H01R12/72—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures
    • H01R12/722—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures coupling devices mounted on the edge of the printed circuits
    • H01R12/724—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures coupling devices mounted on the edge of the printed circuits containing contact members forming a right angle
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/646—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00 specially adapted for high-frequency, e.g. structures providing an impedance match or phase match
    • H01R13/6473—Impedance matching
    • H01R13/6474—Impedance matching by variation of conductive properties, e.g. by dimension variations
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
    • H01R13/652—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding   with earth pin, blade or socket
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
    • H01R13/658—High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse]
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R27/00—Coupling parts adapted for co-operation with two or more dissimilar counterparts

Definitions

  • the present invention relates to connectors mainly used for high-speed digital transmission.
  • a conventional connector of this type has upper and lower contact groups arrayed inside a body thereof.
  • the lower contact group includes a pair of contacts for differential signaling, and other contacts.
  • the upper contact group includes a ground contact relating to the pair of contacts, which is located so as to face a space between the pair of contacts, and other contacts (see paragraphs 0032 and 0033, and Figs. 2 and 5 of Japanese Unexamined Patent Publication No. 2005-5272 ).
  • All the contacts of the lower contact group have rear end portions projected from the body and bent generally into L shapes.
  • the horizontal portions of the rear end portions serve as connection portions to be mounted on wiring lines on a circuit board.
  • All the contacts of the upper contact group also have rear end portions projected from the body and bent generally into L shapes.
  • the horizontal portions of the rear end portions are arranged at the same height as the connection portions of the lower contact group and serve as connection portions to be mounted on wiring lines on a circuit board. (See Fig. 7 of Japanese Unexamined Patent Publication No. 2005-5272 ).
  • connection portions of the contacts of the upper and lower contact groups are lined up at the same height.
  • the connection portions are arranged at substantially equal distances from each other. This arrangement may potentially cause crosstalks between the connection portions of the pair of contacts for differential signaling and the connection portion of the adjacent contact.
  • An embodiment of the invention provides a connector that is less likely to cause crosstalks between adjacent connection portions of signal contacts.
  • a connector of the present invention includes a body with insulation properties; a first contact group arrayed inside the body and including a first contact and a pair of first signal contacts; and a second contact group arrayed inside the body, substantially in parallel with and at a different height position from the first contact group, the second contact group including a second contact and a pair of second signal contacts.
  • the first contact of the first contact group is located so as to face a space between the second signal contacts of the second contact group.
  • the second contact of the second contact group is located so as to face a space between the first signal contacts of the first contact group.
  • the first signal contacts each have a connection portion extending outside the body.
  • the second signal contacts each have a connection portion extending outside the body and at a same height position as the connection portions of the first signal contacts.
  • the first contact has a connection portion extending outside the body, the connection portion being located between and at the same height position as the connection portions of the second signal contacts.
  • the second contact has a connection portion extending outside the body, the connection portion being located between and at the same height position as the connection portions of the first signal contacts.
  • a distance B is larger than a distance A, wherein the distance A is a distance between the connection portion of each of the first signal contacts and the connection portion of the second contact and also a distance between the connection portion of each of the second signal contacts and the connection portion of the first contact, and the distance B is a distance between one of the connection portions of the first signal contacts and an adjacent one of the connection portions of the second signal contacts.
  • the distance B between one of the connection portions of the first signal contacts and an adjacent one of the connection portions of the second signal contacts is larger than the distance A between the connection portion of each first signal contact and the connection portion of the second contact and than the distance A between the connection portion of each second signal contacts and the connection portion of the first contact.
  • connection portions of the first and second contacts are located between the connection portions of the second signal contacts and of the first signal contacts, respectively.
  • Such location is advantageous in minimizing the lengths of ground or other lines on the signal plane of the circuit board for connection with the connection portions of the first and second contacts. More particularly, the ground or other lines can be made shorter by connecting them to a plane (e.g., a ground plane) that is different from the signal plane of the circuit board when the connection portions are connected onto the circuit board. It is thus possible to form almost straight signal lines on the signal plane of the circuit board for connection with the first and second signal contacts, facilitating the connection of the first and second signal contacts to the signal lines of the circuit board. Moreover, the almost straight signal lines of the circuit board, having no bent portions, can deter reflection of signals causing deterioration in transmission characteristics.
  • the first and second signal contacts may be contacts for differential signaling.
  • the first contact group may further include an additional pair of the first signal contacts.
  • the second contact group may further include an additional second contact.
  • the first contact group is a USB 3.0 compliant contact group
  • the second contact group is a USB 2.0 compliant contact group
  • one of the second contacts may be a ground contact
  • the other second contact may be a power source contact.
  • each of the second contacts of the USB 2.0 contact group is located so as to face the space between the first signal contacts of the USB 3.0 contact group.
  • the second contacts are not reference grounds of the first signal contacts, they serve as ground contacts for the first signal contacts in terms of high frequency. The second contacts can be thus used for impedance matching between the first signal contacts, improving transmission characteristics of the first signal contacts.
  • the first contact of the USB 3.0 contact group is located so as to face the space between the second signal contacts of the USB 2.0 contact group.
  • the first contact is not a reference ground of the second signal contacts, either, it serves as a ground contact for the second signal contacts in terms of high frequency.
  • the first contact thus can be used for impedance matching between the second signal contacts, improving transmission characteristics of the second signal contacts.
  • impedances can be matched between the second signal contacts using the first contact of the USB 3.0 contact group, and between the first signal contacts using the second contacts of the USB 2.0 contact group. Consequently, the connector has a simple configuration, compared to a case of adding contacts for impedance matching between the differential pair contacts. In this respect, the connector of the invention is advantageous in downsizing and cost reduction.
  • the connector of the invention may be configured such that the first contact group is arranged in compliance with a first standard, and such that the second contact group is arranged in compliance with a second standard that is different from the first standard.
  • each second contact of the second contact group is located so as to face the space between the first signal contacts of the first contact group in compliance with a different standard.
  • the second contact is not a reference ground of the first signal contacts, it can serve as a ground contact for the first signal contacts in terms of high frequency. The second contact can be thus used for impedance matching between the first signal contacts, improving transmission characteristics of the first signal contacts.
  • the first contact of the contact group is located so as to face the space between the second signal contacts of the second contact group in compliance with the different standard.
  • the first contact is not a reference ground of the second signal contacts, either, it can serve as a ground contact for the second signal contacts in terms of high frequency.
  • the first contact thus can be used for impedance matching between the second signal contacts, improving transmission characteristics of the second signal contacts.
  • impedances can be matched between the second signal contacts using the first contact of the first contact group, and between the first signal contacts using the second contact of the second contact group. Consequently, the connector has a simple configuration, compared to a case of adding contacts for impedance matching between the differential pair contacts. The connector is thus advantageous in downsizing and cost reduction.
  • Each of the first signal contacts may further have a contact portion contactable with a contact of a counterpart connector and a body portion continuing to the contact portion.
  • the distance between the body portions of the first signal contacts may be adjusted in accordance with an impedance difference between the first signal contacts. Specifically, it is preferable that the distance between the body portions of the first signal contacts is adjusted to be substantially the same as the distance between the connection portion of each of the first signal contacts and the connection portion of the second contact.
  • the adjustment of the distance between the body portions of the first signal contacts can prevent possible impedance mismatch between the first signal contacts due to the arrangement that the connection portion of the second contact is located between and at the same height as the connection portions of the first signal contacts so that the distance between the connection portions of the first signal contacts and the connection portion of the second contact is smaller than the distance between the body portions of the first signal contacts.
  • Such matched impedance between the first signal contacts can be realized in a simple configuration because the distance between the body portions of the first differential signal contacts is just adjusted as described above.
  • the distance between the body portions of the first signal contacts may be adjusted by extending the body portions in width of the first signal contacts or by bending the body portions of the first signal contacts in a direction closer to each other.
  • the first signal contacts are not bent at all or bent to a reduced degree in a direction closer to each other (i.e. inward). It is thus expected that the first signal contacts are improved in transmission characteristics.
  • the body can be configured to have a first block, in which the first contact group is arrayed, and a second block, in which the second contact group is arrayed.
  • first block in which the first contact group is arrayed
  • second block in which the second contact group is arrayed.
  • the first contact can be located so as to face the space between the pair of second signal contacts, and the second contact can be located so as to face the space between the pair of first signal contacts. Consequently, it is extremely easy to array the first and second contact group in the body.
  • the second block may have a base portion, in which the second contact group is arrayed, and a pair of guide members provided on the base portion to hold opposite end portions of the first block in a slidable manner.
  • the first block can be attached to the second block only by inserting the first block between the guide members of the second block.
  • a connector according to an embodiment of the present invention will be hereinafter described referring to Figs. 1 to 7 .
  • a connector shown in Figs. 1 to 3E is a receptacle connector adapted to be mounted on a circuit board 10 and connectable with a plug compliant with USB 3.0 or USB 2.0 standard (not shown).
  • the connector has a body 100, a USB 3.0 contact group 200 (first contact group), a USB 2.0 contact group 300 (second contact group), and a shell 400. Each of these components will be hereinafter described in detail.
  • the circuit board 10 is a well-known multilayer printed circuit board.
  • the surface of the top layer i.e., the upper surface of the circuit board
  • the surface of the bottom layer i.e., the lower surface
  • the ground plane On the upper surface of the circuit board 10, pairs of signal lines 11a, 12a, 13a, a power source line 11b and ground lines 12b, 13b are arranged as shown in Fig. 2 .
  • the power source line 11b is disposed between the signal lines 11a and is connected to an intermediate layer of the circuit board 10.
  • the ground line 12b is disposed between the signal lines 12a and is connected to the ground plane of the circuit board 10.
  • the ground line 13b is disposed between the signal line 13a and is connected to the ground plane of the circuit board 10.
  • the USB 3.0 contact group 200 as shown in Figs. 1 to 4 includes a TX+ signal contact 210 (one of a pair of first differential signal contacts), a TX- signal contact 220 (the other of the pair of first differential signal contacts), a ground contact 230 (a first contact), a RX+ signal contact 240 (one of a pair of first differential signal contacts), and a RX-signal contact 250 (the other of the pair of first differential signal contacts).
  • the TX+ signal contact 210 has a plate-like body portion 211, a contact portion 212 in a substantially reverse V-shape in section view continuing to a front end of the body portion 211, a bent portion 213 in a substantial reverse L shape in section view continuing to a rear end of the body portion 211, and a cuboid connection portion 214 continuing to a rear end of the bent portion 213.
  • the contact portion 212 is adapted to contact a USB 3.0 plug contact of a USB 3.0 compliant plug.
  • the rear end portion of the body portion 211 is embedded or buried by insert molding in a first block 110 (to be described) of the body 100.
  • the front end portion of the body portion 211 is inserted into a guide groove 123a of the second block 120.
  • the front end portion of the body portion 211 is elastically deformed downward when contacted by a USB 3.0 plug contact of the USB 3.0 plug, and then the front end portion enters a long hole 121a (to be described) of the second block 120 together with the contact portion 212.
  • the connection portion 214 extends out of the first block 110 of the body 100, and it is connectable to one of the signal lines 11a formed on the circuit board 10, as shown in Fig. 2 .
  • the TX- signal contact 220 is almost identical to the TX+ signal contact 210, except that its connection portion 224 is to be connected to the other signal line 11a on the circuit board 10.
  • a body portion 221, a contact portion 222, and a bent portion 223 of the TX- signal contact 220 are shown in Fig. 4 . Accordingly, further descriptions of the TX- signal contact 220 are not given.
  • the RX+ signal contact 240 is almost identical to the TX+ signal contact 210, except that its connection portion 244 is to be connected to one of the signal lines 13a on the circuit board 10.
  • the RX- signal contact 250 is also almost identical to the TX+ signal contact 210, except that its connection portion 254 is to be connected to the other signal line 13a on the circuit board 10.
  • a body portion 241, a contact portion 242, and a bent portion 243 of the RX+ signal contact 240 and a body portion 251, a contact portion 252, and a bent portion 253 of the RX- signal contact 250 are shown in Fig. 4 . Accordingly, further descriptions of the RX+ signal contact 240 and the RX- signal contact 250 are not given.
  • the ground contact 230 is almost identical to the TX+ signal contact 210, except that its connection portion 234 is to be connected to the ground line 12b on the circuit board 10.
  • a body portion 231, a contact portion 232, and a bent portion 233 of the ground contact 230 are shown in Fig. 4 . Accordingly, further descriptions of the ground contact 230 are not given.
  • the USB 2.0 contact group 300 as shown in Figs. 1 to 4 includes a Vbus contact 310 (a second contact), a Data- contact 320 (one of a pair of second differential signal contacts), a Data+ contact 330 (the other of the pair of second differential signal contacts), and a GND contact 340 (a second contact).
  • the Vbus contact 310 has a plate-like body portion 311, a plate-like contact portion 312 continuing to a front end of the body portion 311, a bent portion 313 continuing to a rear end of the body portion 311, and a cuboid connection portion 314 continuing to a rear end of the bent portion 313.
  • the front end portion of the body portion 311 is embedded or buried by insert molding in a base portion 121 (to be described) of the second block 120 of the body 100.
  • the rear end portion of the body portion 311 is projected backward from a rear end surface of the base portion 121.
  • the contact portion 312 inserted into a guide hole 121b (to be described) of the base portion 121 is exposed from an upper surface of the base portion 121.
  • the upper surface of the contact portion 312 is adapted to contact a USB 2.0 plug contact of a USB 2.0 plug. When pressed by a USB 2.0 plug contact, the contact portion 312 is elastically deformed downward inside the guide hole 121b.
  • connection portion 313 is bent downward in such a manner that a lower surface of the connection portion 314 is brought to the same height as a lower surface of the connection portion 214 of the TX+ signal contact 210.
  • the connection portion 314 extending outside the second block 120 is adapted to be connected to the power source line 11b on the circuit board 10.
  • the GND contact 340 is almost identical to the Vbus contact 310, except that its connection portion 344 is adapted to be connected to the ground line 13b on the circuit board 10.
  • a body portion 341, a contact portion 342, and a bent portion 343 of the GND contact 340 are shown in Fig. 4 . Accordingly, further descriptions of the GND contact 340 are not given.
  • the Data- contact 320 is almost identical to the Vbus contact 310, except that its contact portion 322 is shorter in length than the contact portion 312, and that its connection portion 324 is adapted to be connected to one of the signal lines 12a on the circuit board 10.
  • a body portion 321 and a bent portion 323 of the Data-contact 320 are shown in Fig. 4 . Accordingly, further descriptions of the Data- contact 320 are not given.
  • the Data+ contact 330 is almost identical to the Data- contact 320, except that its connection portion 334 is adapted to be connected to the other signal line 12a on the circuit board 10.
  • a body portion 331, a contact portion 332, and a bent portion 333 of the Data+ contact 330 are shown in Fig. 4 . Accordingly, further description of the Data+ contact 330 are not given.
  • the body 100 has the first block 110 and the second block 120, both made of insulating resin.
  • the first block 110 is generally T-shaped in plan view, while the second block 120 is generally L-shaped in section view.
  • the second block 120 has the said base portion 121, a pair of guide plates 122 (guide members), and a contact guide 123.
  • the guide plates 122 are disposed on the rear end portions at opposite widthwise ends of the base portion 121.
  • the contact guide 123 is provided on the rear end portion of the base portion 121 and between front end portions of the guide plates 122.
  • the base portion 121 there are buried front end portions of the body portions 311, 321, 331, 341 of the Vbus contact 310, the Data-contact 320, the Data- contact 320, and the GND contact 340 of the USB 2.0 contact group 300. These front end portions are spaced apart from one another in the width direction of the second block 120.
  • the front end portion of the base portion 121 has four guide holes 121b formed vertically therethrough, as shown in Figs. 2 , 3A and 3C .
  • the guide holes 121b receive the contact portions 312, 322, 332, 342 of the Vbus contact 310, the Data- contact 320, the Data+ contact 330 and the GND contact 340 of the USB 2.0 contact group 300.
  • the contact portions 312, 322, 332, 342 are exposed from the upper surface of the base portion 121, particularly from the guide holes 121b.
  • the base portion 121 further has the said five long holes 121a communicating with the guide grooves 123a and arranged between the body portions 311, 321, 331, 341 of the Vbus contact 310, the Data- contact 320, the Data+ contact 330 and the GND contact 340.
  • the long holes 121a and the body portions 311, 321, 331, 341 are alternately arranged.
  • the guide plates 122 are each provided, along the rear end portion of the inner surface thereof, with a guide recess 122a for receiving a guide projection 111 (to be described) of the first block 110. That is, the guide recesses 122a are used to guide the guide projections 111, thereby holding the first block 110 between the rear end portions of the paired guide plates 122 of the second block 120.
  • the contact guide 123 has the said five guide grooves 123a, which are arranged at the same spacing as the long holes 121a.
  • Each guide groove 123a excluding the central one has a beam portion 123b suspended between its edges.
  • a width dimension of the first block 110 is slightly smaller than a distance between the pair of guide plates 122 of the second block 120. That is, the first block 110 can be inserted between the pair of guide plates 122 of the second block 120.
  • the guide projections 111 extend along widthwise end surfaces of the first block 110 as shown in Fig. 4 . These guide projections 111 are inserted into the respective guide recesses 122a of the guide plates 122.
  • a pair of flanges 112 projects outward from the opposite widthwise ends at the rear end of the first block 110. The flanges 112 are to abut on rear ends of the guide plates 122 of the second block 120.
  • an inclined recess 113 is formed in a central portion of the upper surface of the first block 110.
  • the inclined recess 113 is used to lock a locking piece 411 of the shell 400 so as to prevent the first block 110 from falling off backward.
  • the first block 110 has the TX+ signal contact 210, the TX- signal contact 220, the ground contact 230, and the RX+ signal contact 240 and the RX- signal contact 250 of the USB 3.0 contact group 200 buried therein, in a spaced relationship from one another in the width direction of the first block 110.
  • the front end portions of the body portions 211, 221, 231, 241, 251 of the TX+ signal contact 210, the TX- signal contact 220, the ground contact 230, the RX+ signal contact 240, and the RX- signal contact 250 enter the respective guide grooves 123a.
  • the front end portions of the body portions 211, 221, 231, 241, 251, and the contact portions 212, 222, 232, 242, 252 are brought over the long holes 121a of the base portion 121 of the second block 120.
  • the USB 3.0 contact group 200 and the USB 2.0 contact group 300 extend in the same direction but substantially in parallel at different height positions with each other.
  • the Vbus contact 310 is located so as to face a space between the TX+ signal contact 210 and the TX- signal contact 220.
  • the GND contact 340 is located so as to face a space between the RX+ signal contact 240 and the RX- signal contact 250.
  • the ground contact 230 is located so as to face a space between the Data-contact 320 and the Data+ contact 330.
  • the Vbus contact 310 is located between the TX+ signal contact 210 and the TX-signal contact 220, the GND contact 340 between the RX+ signal contact 240 and the RX- signal contact 250, and the ground contact 230 between the Data- contact 320 and the Data+ contact 330.
  • their connection portions are lined up in the order of 214, 314, 224, 324, 234, 334, 244, 344, 254, as shown in Fig. 5 .
  • a distance B between the connection portion 224 and the connection portion 324 or between the connection portion 334 and the connection portion 244 is larger than a distance A between the connection portion 214 and the connection portion 314, between the connection portion 224 and the connection portion 314 or the like.
  • the distance A between the connection portion 224 and the connection portion 314 or the like should be smaller than a distance C between the body portion 211 and the body portion 221 or the like, which should result in impedance mismatching between the TX+ signal contact 210 and the TX- signal contact 220 or the like.
  • the distance C between the body portion 211 and the body portion 221 is adjusted in accordance with the impedance difference between the TX+ signal contact 210 and the TX- signal contact 220.
  • the body portion 211 of the TX+ signal contact 210 and the body portion 221 of the TX- signal contact 220 are extended inward in the width dimension to reduce the distance C.
  • the body portion 211 of the TX+ signal contact 210 and the body portion 221 of the TX- signal contact 220 may be bent in a direction close to each other (i.e. inward) to reduce the distance C, whereby the distance A and the distance C are set to be almost the same.
  • the TX+ signal contact 210 and the TX- signal contact 220 can be matched in impedance.
  • the former case can obviate the necessity for bending the TX+ signal contact 210 and the TX- signal contact 220 inward when arranging the connection portion 314 between the connection portions 214 and 224. Consequently, the TX+ signal contact 210 and the TX- signal contact 220 can be improved in high-frequency characteristics.
  • Another advantage in simply adjusting the distance C between the body portion 211 and the body portion 221 is that the connector has a simplified structure with matched impedance between the TX+ signal contact 210 and the TX- signal contact 220. It should be noted that a similar distance adjustment is made between the body portion 241 of the RX+ signal contact 240 and the body portion 251 of the RX- signal contact 250. No further description on this adjustment should be unnecessary here.
  • the shell 400 has a metal shell body 410 of a square-cylindrical shape and a pair of leg portions 420 extended downward from the shell body 410.
  • the shell body 410 surrounds the assembled first and second blocks 110 and 120.
  • a space between the shell body 410 and a front end portion of the base portion 121 of the second block 120 forms a plug insertion hole ⁇ for receiving a USB 3.0 plug or a USB 2.0 plug.
  • the rear end portion of the upper surface of the shell body 410 has the locking piece 411 cut out and bent downward. The locking piece 411 is locked by the inclined recess 113 of the first block 110 to prevent the first block 110 from coming off backward.
  • the leg portions 420 are continuously provided in the rear end portion of the shell body 410.
  • the leg portions 420 are to be inserted into locking holes (not shown) of the circuit board 10 and locked against edges of the locking holes.
  • the receptacle connector configured as described above is assembled in the following manner. First, the TX+ signal contact 210, the TX- signal contact 220, the ground contact 230, the RX+ signal contact 240, and the RX- signal contact 250, which are embedded or buried in the first block 110, are inserted into the guide grooves 123a of the second block 120 at their contact portions 212, 222, 232, 242, 252, while the guide projections 111 of the first block 110 are inserted into the guide recesses 122a of the paired guide plates 122 of the second block 120.
  • the front end portions of the body portions 211, 221, 231, 241, 251 of the TX+ signal contact 210, the TX- signal contact 220, the ground contact 230, the RX+ signal contact 240 and the RX- signal contact 250 are received in the respective guide grooves 123a, and then the front end portions of the body portions 211, 221, 231, 241, 251 and the contact portions 212, 222, 232, 242, 252 are placed over the long holes 121a of the base portion 121 of the second block 120.
  • the first and second blocks 110, 120 are thus assembled and then inserted into the shell body 410. This allows the locking piece 411 of the shell body 410 to be fitted in the inclined recess 113 of the second block 120.
  • the receptacle connector assembled as described above is mounted on the circuit board 10 in the following steps.
  • the leg portions 420 of the shell 400 are inserted into the locking holes of the circuit board 10.
  • the connection portion 214 is placed on the one signal line 11a on the circuit board 10;
  • the connection portion 314 is placed on the power source line 11b on the circuit board 10;
  • the connection portion 224 is placed on the other signal line 11a on the circuit board 10;
  • the connection portion 324 is placed on the one signal line 12a on the circuit board 10;
  • the connection portion 234 is placed on the ground line 12b on the circuit board 10;
  • the connection portion 334 is placed on the other signal line 12a on the circuit board 10;
  • the connection portion 244 is placed on the one signal line 13a on the circuit board 10;
  • the connection portion 344 is placed on the ground line 13b on the circuit board 10; and
  • the connection portion 254 is placed on the other signal line 13a on the circuit board 10.
  • connection portion 214 is connected to the one signal line 11a on the circuit board 10 by soldering.
  • the connection portion 314 is connected to the power source line 11b on the circuit board 10 by soldering.
  • the connection portion 224 is connected to the other signal line 11a on the circuit board 10 by soldering.
  • the connection portion 324 is connected to the one signal line 12a on the circuit board 10 by soldering.
  • the connection portion 234 is connected to the ground line 12b on the circuit board 10 by soldering.
  • connection portion 334 is connected to the other signal line 12a on the circuit board 10 by soldering.
  • the connection portion 244 is connected to the one signal line 13a on the circuit board 10 by soldering.
  • the connection portion 344 is connected to the ground line 13b on the circuit board 10 by soldering.
  • the connection portion 254 is connected to the other signal line 13a on the circuit board 10 by soldering.
  • the receptacle connector is thus mounted on the circuit board 10 and then is ready for connection with a USB 3.0 plug or a USB 2.0 plug.
  • USB 3.0 plug contacts of the USB 3.0 plug come into contact with respective tops of the contact portions 212, 222, 232, 242, 252 of the TX+ signal contact 210, the TX- signal contact 220, the ground contact 230, the RX+ signal contact 240, and the RX- signal contact 250.
  • the USB 3.0 plug contacts press the contact portions 212, 222, 232, 242, 252, so that the front end portions of the body portions 211, 221, 231, 241, 251 are elastically deformed downward. Consequently, the front end portions of the body portions 211, 221, 231, 241, 251 and the contact portions 212, 222, 232, 242, 252 enter the respective long holes 121a of the second block 120.
  • USB 2.0 plug contacts of the USB 2.0 plug come into contact with upper surfaces of the contact portions 312, 322, 332, 342 of the Vbus contact 310, the Data- contact 320, the Data- contact 320, and the GND contact 340, respectively.
  • the USB 2.0 plug contacts of USB 2.0 plug press the contact portions 312, 322, 332, 342, so that the contact portions 312, 322, 332, 342 are elastically deformed downward inside the guide holes 121b of the second block 120.
  • the distance B between the connection portion 224 and the connection portion 324 or between the connection portion 334 and the connection portion 244 is larger than the distance A between the connection portion 214 and the connection portion 314 or the like.
  • This arrangement can reduce the occurrence of crosstalks between differential contact pairs at their connection portions. More particularly, the occurrence of crosstalks is reduced between the connection portions 214, 224 of the TX+ and TX- signal contacts 210, 220 and the connection portions 324, 334 of the Data- and Data+ contacts 320, 330. The occurrence of crosstalks is similarly reduced between the connection portions 324, 334 of the Data- and Data+ contacts 320, 330 and the connection portions 244, 254 of the RX+ and RX-signal contacts 240, 250.
  • connection portion 314 of the Vbus contact 310 is located between the connection portion 214 of the TX+ signal contact 210 and the connection portion 224 of the TX- signal contact 220.
  • This location is advantageous in minimizing the length of the power source line 11b on the signal plane of the circuit board 10, by connecting the power source line 11b for connection with the connection portion 314 on the circuit board 10 to the intermediate layer (that differs from the signal plane) of the circuit board 10. Consequently, the signal lines 11a on the circuit board 10 for connection with the connection portions 214, 224 can be formed almost straight, thus facilitating the connection by soldering of the connection portions 214, 224 to the signal lines 11a on the circuit board 10.
  • connection portion 234 of the ground contact 230 is located between the connection portion 324 of the Data-contact 320 and the connection portion 334 of the Data+ contact 330.
  • This location is advantageous in minimizing the length of the ground line 12b on the signal plane of the circuit board 10, by connecting the ground line 12b to the ground plane of the circuit board 10. Consequently, the signal lines 12a on the circuit board 10 for connection with the connection portions 324, 334 can be formed almost straight, thus facilitating the connection by soldering of the connection portions 324, 334 to the signal lines 12a on the circuit board 10.
  • the connection portion 344 of the GND contact 340 is located between the connection portion 244 of the RX+ signal contact 240 and the connection portion 254 of the RX- signal contact 250.
  • This location is advantageous in minimizing the length of the ground line 13b on the signal plane of the circuit board 10, by connecting the ground line 13b for connection with the the connection portion 344 on the circuit board 10 to the ground plane of the circuit board 10. Consequently, the signal lines 13a on the circuit board 10 for connection with the connection portions 244, 254 can be formed almost straight, thus facilitating the connection by soldering of the connection portions 244, 254 to the signal lines 13a on the circuit board 10. Moreover, the almost straight signal lines 11a, 12a, 13a of the circuit board 10, having no bent portions, can deter reflection of signals causing deterioration in transmission characteristics.
  • the Vbus contact 310 of the USB 2.0 contact group 300 is located so as to face the space between the TX+ signal contact 210 and the TX- signal contact 220 that make a differential pair in the USB 3.0 contact group 200.
  • the Vbus contact 310 is not a reference ground of the TX+ signal contact 210 and the TX- signal contact 220 making the differential pair, it serves as a ground for the TX+ signal contact 210 and the TX- signal contact 220 in terms of high frequency. Consequently, the Vbus contact 310 can be used for impedance matching between the TX+ signal contact 210 and the TX- signal contact 220, thus improving transmission characteristics of the TX+ signal contact 210 and the TX- signal contact 220.
  • the GND contact 340 of the USB 2.0 contact group 300 is located so as to face the space between the RX+ signal contact 240 and the RX- signal contact 250 that make another differential pair in the USB 3.0 contact group 200.
  • the GND contact 340 is not a reference ground of the RX+ signal contact 240 and the RX- signal contact 250, it serves as a ground for the RX+ signal contact 240 and the RX-signal contact 250 in terms of high frequency. Consequently, the GND contact 340 can be used for impedance matching between the RX+ signal contact 240 and the RX- signal contact 250, thus improving transmission characteristics of the RX+ signal contact 240 and the RX- signal contact 250.
  • the ground contact 230 of the USB 3.0 contact group 200 is located so as to face the space between the Data-contact 320 and the Data+ contact 330 of the USB 3.0 contact group 200.
  • the ground contact 230 is not a reference ground of the Data- contact 320 and the Data+ contact 330, it serves as a ground for the Data- contact 320 and the Data- contact 320 in terms of high frequency. Consequently, the ground contact 230 can be used for impedance matching between the Data- contact 320 and the Data+ contact 330, thus improving transmission characteristics of the Data-contact 320 and the Data+ contact 330.
  • the Vbus contact 310 of the USB 2.0 contact group 300 is used for impedance matching between differential pair contacts of the USB 3.0 contact group 200, namely the TX+ signal contact 210 and the TX- signal contact 220.
  • the GND contact 340 of the USB 2.0 contact group 300 is used for impedance matching between the other differential pair contacts of the USB 3.0 contact group 200, namely the RX+ signal contact 240 and the RX- signal contact 250.
  • the ground contact 230 of the USB 3.0 contact group 200 is used for impedance matching between the differential pair contacts of the USB 2.0 contact group 300, namely the Data- contact 320 and the Data+ contact 330. Consequently, the connector has a simple configuration, compared to a case of adding contacts for impedance matching between differential pair contacts. In this respect, the present receptacle connector is advantageous in downsizing and cost reduction.
  • the body 100 has the first and second blocks 110, 120.
  • the body 100 may be made of a single block. Obviously, the body 100 can be divided into three or more blocks.
  • the guide projections 111 are provided on the opposite widthwise end surfaces of the first block 110, and the guide recesses 122a are provided in the inner surfaces of the guide plates 122 of the second block 120.
  • the first and second blocks 110, 120 can be assembled using any other attachment means.
  • the first block 110 may have a locking piece or a locking hole to be locked by a locking hole or a locking piece, respectively, of the second block 120. It is also obviously possible to provide the guide projections 111 on the inner surfaces of the guide plates 122 and the guide recesses 122a in the opposite end surfaces of the first block 110.
  • the contacts of the USB 3.0 contact group 200 and the USB 2.0 contact group 300 may be or may not be buried in the first and second blocks 110, 120, respectively.
  • the body may have attachment holes for receiving the contacts of the USB 3.0 contact group 200 and the USB 2.0 contact group 300.
  • the connector according to the above-described embodiment includes the USB 3.0 contact group 200 and the USB 2.0 contact group 300.
  • the connector only need to include first and second contact groups of any kind that are arrayed substantially in parallel and at different heights inside the body.
  • the first contact group can be arranged pursuant to a certain first standard
  • the second contact group can be arranged pursuant to a second standard that is different from the first standard.
  • the minimum requirements are that the first contact group has at least a pair of first signal contacts and a first contact, and that the second contact group has at least a pair of second signal contacts and a second contact.
  • first signal contacts of the first contact group may be for differential signaling, while the second signal contacts of the second contact group may be for single-ended signaling.
  • second signal contacts of the second contact group may be for differential signaling, while the first signal contacts of the first contact group may be for single-ended signaling.
  • the present invention is not limited to the case of the embodiment where the distance C between the body portion 211 and the body portion 221 is adjusted in accordance with the impedance difference between the TX+ signal contact 210 and the TX- signal contact 220, and where the distance between the body portion 241 and the body portion 251 is adjusted in accordance with the impedance difference between the RX+ signal contact 240 and the RX- signal contact 250.
  • each distance between the body portions only need to be adjusted in accordance with the impedance difference between the differential signal contacts, and each distance between the portions other than the body portions (the foregoing contact portions and/or bent portions) may be adjusted in accordance with the impedance difference between the differential signal contacts. However, such impedance matching does not need to be conducted when unnecessary.
  • a distance between the body portions 321 and 331 of the USB 2.0 contact group 300 can also be adjusted in accordance with impedance difference between Data-contact 320 and the Data+ contact 330.
  • the present invention is not limited to a receptacle connector mountable on a circuit board 10.
  • the connector may be a plug connector having contacts whose connection portions are connectable to a cable or the like.

Landscapes

  • Details Of Connecting Devices For Male And Female Coupling (AREA)
EP10250543.5A 2009-03-24 2010-03-23 Connecteur Not-in-force EP2234221B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2009071703A JP4887393B2 (ja) 2009-03-24 2009-03-24 コネクタ

Publications (2)

Publication Number Publication Date
EP2234221A1 true EP2234221A1 (fr) 2010-09-29
EP2234221B1 EP2234221B1 (fr) 2013-09-18

Family

ID=42340737

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10250543.5A Not-in-force EP2234221B1 (fr) 2009-03-24 2010-03-23 Connecteur

Country Status (6)

Country Link
US (1) US8485851B2 (fr)
EP (1) EP2234221B1 (fr)
JP (1) JP4887393B2 (fr)
KR (1) KR101665136B1 (fr)
CN (1) CN101859938B (fr)
TW (1) TWI496352B (fr)

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JP6483497B2 (ja) * 2015-03-27 2019-03-13 第一電子工業株式会社 コネクタ
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GB2503558A (en) * 2012-05-16 2014-01-01 Power Quotient Int Co Ltd USB 2.0 and 3.0 compatible electrical connector

Also Published As

Publication number Publication date
TW201042840A (en) 2010-12-01
JP4887393B2 (ja) 2012-02-29
CN101859938B (zh) 2014-01-15
CN101859938A (zh) 2010-10-13
US8485851B2 (en) 2013-07-16
KR101665136B1 (ko) 2016-10-11
JP2010225426A (ja) 2010-10-07
EP2234221B1 (fr) 2013-09-18
KR20100106921A (ko) 2010-10-04
US20100248515A1 (en) 2010-09-30
TWI496352B (zh) 2015-08-11

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